<template>
  <div class="login">

    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">欢迎登录K8S管理平台</h3>

      <el-form-item prop="username">

        <el-input
            v-model="loginForm.username"
            type="text"
            size="large"
            auto-complete="off"
            placeholder="账号"
        >
          <template #prefix><svg-icon icon="user" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
            v-model="loginForm.password"
            type="password"
            size="large"
            auto-complete="off"
            placeholder="密码"
            show-password
        >
          <template #prefix><svg-icon icon="password" /></template>
        </el-input>
      </el-form-item>

      <el-form-item prop="sidentifyMode">
        <el-input
            type="text"
            size="large"
            auto-complete="off"
            placeholder="验证码"
            v-model="loginForm.sidentifyMode"
            style="width: 300px;"
            >
        <template #prefix><svg-icon icon="validCode" /></template>
        </el-input>
      <!-- 使用验证码组件 -->
      <div class="code" @click="refreshCode" style="margin-left: 30px;">
        <SIdentify :identifyCode="identifyCode"></SIdentify>
      </div>
      </el-form-item>


      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
            size="large"
            type="primary"
            style="width:100%;"
            @click.prevent="handleLogin"
            @keyup.enter="keyDown"
        >
          <span>登 录</span>

        </el-button>

      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2024 阿哲 <a href="https://www.azhe.asia" target="_blank">www.azhe.asia</a></span>
    </div>
  </div>
</template>

<script setup>
  import { onMounted, onUnmounted, ref } from 'vue'
  import requestUtil from '@/util/request'
  import qs from 'qs'
  import {ElMessage} from 'element-plus'
  import Cookies from "js-cookie";
  import { encrypt, decrypt } from "@/util/jsencrypt";
  import router from '@/router'
  import SIdentify from '@/components/Sidentify'

  let identifyCode = ref('') //图形验证码
  let identifyCodes = ref('1234567890abcdefjhijklinopqrsduvwxyz') //验证码出现的数字和字母

  // 生成随机数
  const randomNum = (min, max) => {
    max = max + 1
    return Math.floor(Math.random() * (max - min) + min)
  }
  // 随机生成验证码字符串
  const makeCode = (o, l) => {
    for (let i = 0; i < l; i++) {
      identifyCode.value += o[randomNum(0, o.length)]
    }
  }
  // 更新验证码
  const refreshCode = () => {
    identifyCode.value = ''
    makeCode(identifyCodes.value, 4)
  }

  const loginForm=ref({
    username:'',
    password:'',
    sidentifyMode:'',
    rememberMe:false
  })

  const loginRef=ref(null)

  const loginRules = {
    username: [{required: true, trigger: "blur", message: "请输入您的账号"}],
    password: [{required: true, trigger: "blur", message: "请输入您的密码"}],
    sidentifyMode: [{required: true, trigger: "blur", message: "请输入验证码"}]
  };

  const handleLogin=()=>{
    loginRef.value.validate(async (valid)=>{
      if(valid){
        //验证验证码是否正确
        if (loginForm.value.sidentifyMode != identifyCode.value) {
          ElMessage({ type: 'error', message: '验证码错误！' })
          refreshCode()
          return
        }
        let result=await requestUtil.post("user/login?"+qs.stringify(loginForm.value))
        console.log(result)
        let data=result.data
        if(data.code==200){
          ElMessage.success(data.info)
          window.sessionStorage.setItem("token",data.token)
          const currentUser=data.user
          currentUser.roles=data.roles
          window.sessionStorage.setItem("currentUser",JSON.stringify(currentUser))
          window.sessionStorage.setItem("menuList",JSON.stringify(data.menuList))
          // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
          if (loginForm.value.rememberMe) {
            Cookies.set("username", loginForm.value.username, { expires: 30 });
            Cookies.set("password", encrypt(loginForm.value.password), { expires: 30 });
            Cookies.set("rememberMe", loginForm.value.rememberMe, { expires: 30 });
          } else {
            // 否则移除
            Cookies.remove("username");
            Cookies.remove("password");
            Cookies.remove("rememberMe");
          }
          router.replace("/index")
        }else{
          ElMessage.error(data.info)
        }
      }else{
        console.log("验证失败")
      }
    })
  }

  function getCookie() {
    const username = Cookies.get("username");
    const password = Cookies.get("password");
    const rememberMe = Cookies.get("rememberMe");
    loginForm.value = {
      username: username === undefined ? loginForm.value.username : username,
      password: password === undefined ? loginForm.value.password : decrypt(password),
      rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
    };
  }

  getCookie();


//回车登录事件
const keyDown =(e) => {
    //如果是回车则执行登录方法
    if(e.keyCode === 13){
        //需要执行的登录方法
       handleLogin();
    }
  }

onMounted(() => {
  //组件挂载
  identifyCode.value = ''
  makeCode(identifyCodes.value, 4)
  //回车事件
  window.addEventListener('keydown', keyDown);
})

onUnmounted(() => {
  window.removeEventListener('keydown', keyDown);
})
</script>

<style lang="scss" scoped>
a{
  color:white
}
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.jpg");
  background-size: cover;
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: dodgerblue;
  font-size: 20px;
  font-weight: bold;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 450px;
  padding: 25px 25px 5px 25px;

  .el-input {
    height: 40px;



    input {
      display: inline-block;
      height: 40px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }

}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 40px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>
